diff --git a/src/components/Scarf.tsx b/src/components/Scarf.tsx
new file mode 100644
index 000000000..e6c5128a0
--- /dev/null
+++ b/src/components/Scarf.tsx
@@ -0,0 +1,18 @@
+import { useRouterState } from '@tanstack/react-router'
+import { useMounted } from '~/hooks/useMounted'
+
+export function Scarf({ id }: { id: string }) {
+  const locationKey = useRouterState({ select: (s) => s.location.state.key })
+
+  const mounted = useMounted()
+
+  return mounted ? (
+    <img
+      key={locationKey}
+      alt="scarf analytics"
+      referrerPolicy="no-referrer-when-downgrade"
+      src={`https://static.scarf.sh/a.png?x-pxid=${id}&key=${locationKey}`}
+      className="fixed bottom-0 left-0 w-full h-full opacity-0 pointer-events-none"
+    />
+  ) : null
+}
diff --git a/src/libraries/libraries.ts b/src/libraries/libraries.ts
index 87e1a1881..1c7982a3e 100644
--- a/src/libraries/libraries.ts
+++ b/src/libraries/libraries.ts
@@ -24,6 +24,7 @@ export const query: LibrarySlim = {
   corePackageName: '@tanstack/query-core',
   npmPackageNames: ['@tanstack/query-core', 'react-query'],
   availableVersions: ['v5', 'v4', 'v3'],
+  scarfId: '53afb586-3934-4624-a37a-e680c1528e17',
   defaultDocs: 'framework/react/overview',
   sitemap: {
     includeLandingPage: true,
@@ -208,6 +209,7 @@ export const router: LibrarySlim = {
   latestVersion: 'v1',
   latestBranch: 'main',
   availableVersions: ['v1'],
+  scarfId: '3d14fff2-f326-4929-b5e1-6ecf953d24f4',
   docsRoot: 'docs/router',
   sitemap: {
     includeLandingPage: true,
@@ -270,6 +272,7 @@ export const start: LibrarySlim = {
   availableVersions: ['v0'],
   corePackageName: '@tanstack/start-client-core',
   npmPackageNames: ['@tanstack/start-client-core'],
+  scarfId: 'b6e2134f-e805-401d-95c3-2a7765d49a3d',
   docsRoot: 'docs/start',
   defaultDocs: 'framework/react/overview',
   sitemap: {
@@ -310,6 +313,7 @@ export const table: LibrarySlim = {
   latestVersion: 'v9',
   latestBranch: 'main',
   availableVersions: ['v9', 'v8'],
+  scarfId: 'dc8b39e1-3fe9-4f3a-8e56-d4e2cf420a9e',
   defaultDocs: 'overview',
   sitemap: {
     includeLandingPage: true,
@@ -435,6 +439,7 @@ export const form: LibrarySlim = {
   latestVersion: 'v1',
   latestBranch: 'main',
   availableVersions: ['v1', 'alpha'],
+  scarfId: '72ec4452-5d77-427c-b44a-57515d2d83aa',
   sitemap: {
     includeLandingPage: true,
     includeDocsPages: true,
@@ -457,6 +462,7 @@ export const virtual: LibrarySlim = {
   latestVersion: 'v3',
   latestBranch: 'main',
   availableVersions: ['v3'],
+  scarfId: '32372eb1-91e0-48e7-8df1-4808a7be6b94',
   defaultDocs: 'introduction',
   legacyPackages: ['react-virtual'],
   sitemap: {
@@ -482,6 +488,7 @@ export const ranger: LibrarySlim = {
   latestVersion: 'v0',
   latestBranch: 'main',
   availableVersions: ['v0'],
+  scarfId: 'dd278e06-bb3f-420c-85c6-6e42d14d8f61',
   visible: false,
   sitemap: {
     includeLandingPage: true,
@@ -514,6 +521,7 @@ export const store: LibrarySlim = {
   latestVersion: 'v0',
   latestBranch: 'main',
   availableVersions: ['v0'],
+  scarfId: '302d0fef-cb3f-43c6-b45c-f055b9745edb',
   defaultDocs: 'overview',
   sitemap: {
     includeLandingPage: true,
@@ -539,6 +547,7 @@ export const pacer: LibrarySlim = {
   latestVersion: 'v0',
   latestBranch: 'main',
   availableVersions: ['v0'],
+  scarfId: '302d0fef-cb3f-43c6-b45c-f055b9745edb',
   defaultDocs: 'overview',
   sitemap: {
     includeLandingPage: true,
@@ -669,6 +678,7 @@ export const db: LibrarySlim = {
   latestVersion: 'v0',
   latestBranch: 'main',
   availableVersions: ['v0'],
+  scarfId: '302d0fef-cb3f-43c6-b45c-f055b9745edb',
   defaultDocs: 'overview',
   sitemap: {
     includeLandingPage: true,
diff --git a/src/libraries/types.ts b/src/libraries/types.ts
index 292f34580..4af16e416 100644
--- a/src/libraries/types.ts
+++ b/src/libraries/types.ts
@@ -44,6 +44,7 @@ export type LibrarySlim = {
   latestVersion: string
   latestBranch?: string
   availableVersions: string[]
+  scarfId?: string
   defaultDocs?: string
   docsRoot?: string
   hideCodesandboxUrl?: true
diff --git a/src/routes/_library/$libraryId/route.tsx b/src/routes/_library/$libraryId/route.tsx
index b8831c78b..5f0202edd 100644
--- a/src/routes/_library/$libraryId/route.tsx
+++ b/src/routes/_library/$libraryId/route.tsx
@@ -1,5 +1,6 @@
 import { createFileRoute } from '@tanstack/react-router'
 import { notFound, Outlet } from '@tanstack/react-router'
+import { Scarf } from '~/components/Scarf'
 import { findLibrary, LibraryId } from '~/libraries'
 import { seo } from '~/utils/seo'
 import { ogImageUrl } from '~/utils/og'
@@ -64,5 +65,10 @@ function RouteForm() {
     return null
   }
 
-  return <Outlet />
+  return (
+    <>
+      <Outlet />
+      {library?.scarfId ? <Scarf id={library.scarfId} /> : null}
+    </>
+  )
 }
diff --git a/tests/static-data-contracts.test.ts b/tests/static-data-contracts.test.ts
index b9ad8f573..ff0633a38 100644
--- a/tests/static-data-contracts.test.ts
+++ b/tests/static-data-contracts.test.ts
@@ -7,6 +7,9 @@ import {
   publicLibraries,
 } from '../src/libraries/libraries'
 
+const uuidPattern =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
+
 assert.deepEqual(
   publicLibraries,
   libraries.filter(isPublicLibrary),
@@ -37,6 +40,18 @@ for (const library of publicLibraries) {
   )
 }
 
+for (const library of libraries) {
+  if (!library.scarfId) {
+    continue
+  }
+
+  assert.match(
+    library.scarfId,
+    uuidPattern,
+    `${library.id} scarfId must be a UUID`,
+  )
+}
+
 for (const maintainer of allMaintainers) {
   const socialEntries = Object.entries(maintainer.social ?? {})